ttcamaro

I got the fast track harness and im trying to figure out what they used for the 5 volt referance for the tps sensor. I misplaced my directions for the wiring. According to fast it should be E1 on the computer but i dont have a wire hook up there and the tps works fine. Anyone know what pin out fast track performance uses for the 5 volt referance?

cant get ahold of anyone there

thanks